bangs



(N0 Modl.) L. A. BANGS.

CHAIR.

No. 458,140. Patented Aug. 18, 1891.

we NORRIS PETERS co., moYo-Lxmd, wusumaran, n. c.

UNITED STATES PATENT OFFICE.

LOIS A. BANGS, OF BROOKLYN, NEWV YORK, ASSIGNOR OF ONE-HALF TO MARY B.IVHITON.

CHAIR.

SPECIFICATION forming part of Letters Patent No. 458,140, dated August18, 1891.

Application filed November 24, 1890. Serial No. 372,450. (No model.)

T at whom it may concern.-

Be it known that I, LOIS A. BANGS. a resident of Brooklyn, in the countyof Kings and State of New York, have invented certain new and usefulImprovements in Chairs and I do hereby declare the following to be afull, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it pertains to make and use thesame.

to It is the object of the invention to produce a chair not differingwidely in appearance from ordinary forms, but that shallmore perfectlysupport the shoulders and spinal column when in a comfortable andhealthful I5 position. It is shown in the accompanying drawings, inwhich Figure 1 is a perspective view of the complete chair; Fig. 2, aside elevation of the same; Fig. 3, a horizontal section at the point w01 :1}, Fig. 1.

In the drawings, A is the seat, and B B are side posts for thechair-back. The latter are perfectly continuous with the rearseat-supporting legs. Above the seat the posts incline 2 5 forward, thenbend rearward somewhat sharply in a curve corresponding in position tothe small of the back, and thence extend upward and rearward to a pointcorresponding to the position of the shoulders, where'they 0 again curveslightly forward. They are connected at two or more points by forwardlyconvex cross-bars O, and these are connected by a series of bars D,nearly identical in curvature with the parts of the posts that lie in 35 the same horizontal plane. The whole back and forwardly concave at theupper part and in horizontal sections is at all points forwardly convex.It isth us adapted to support 0 nearly the whole length of the spine andat the same time the'parts upon each side thereof, whether or not theperson occupies precisely the middle of the chair, and whatever theposition the shoulders are not pressed forward so 5 as to compress thechest or interfere with the perfect action of its muscles.

The material used in construction is preferably wood, and it isessential that the parts he so far rigid that the convex portions remainconvex at all times. If the lowercross-- bar be placed at the point Band the barsD be omitted, the chair will still be valuable, though lesssatisfactory.

hat I claim is v 5 1. A chair-back having side posts connected byforwardly convex cross-bars in position to support, respectively,theshoulders and the lower portion of the back, as set forth.

2. A chair having the side posts of its back conformed approximately tothe normal front and rear curvature of the spinal column and connectedat points corresponding to the position of the shoulders and the lowerportion of the back by forwardly convex cross -bars, which arethemselves united by bars similar in curvature to said side posts.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.v

LOIS A. BANGS.

Witnesses: I

MARY B. Wrnrox, FRANK HARDY.

